A multiscale FEM to model CO<sub>2</sub> sequestration in saline aquifers

A major cause of the attenuation levels observed in seismic data from sedimentary regions is the mesoscopic loss mechanism, caused by heterogeneities in the rock and fluid properties greater than the pore size but much smaller than the wavelengths of the fast compressional and shear waves. The main...

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Autores principales: Savioli, Gabriela B., Santos, Juan Enrique, Macias, Lucas A., Gauzellino, Patricia Mercedes
Formato: Objeto de conferencia
Lenguaje:Inglés
Publicado: 2017
Materias:
Ingeniería
Mesoscopic attenuation
Time-harmonic compressibility tests
CO2 storage
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/103879
https://cimec.org.ar/ojs/index.php/mc/article/view/5366
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-103879
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ingeniería
Mesoscopic attenuation
Time-harmonic compressibility tests
CO2 storage
spellingShingle Ingeniería
Mesoscopic attenuation
Time-harmonic compressibility tests
CO2 storage
Savioli, Gabriela B.
Santos, Juan Enrique
Macias, Lucas A.
Gauzellino, Patricia Mercedes
A multiscale FEM to model CO<sub>2</sub> sequestration in saline aquifers
topic_facet Ingeniería
Mesoscopic attenuation
Time-harmonic compressibility tests
CO2 storage
description A major cause of the attenuation levels observed in seismic data from sedimentary regions is the mesoscopic loss mechanism, caused by heterogeneities in the rock and fluid properties greater than the pore size but much smaller than the wavelengths of the fast compressional and shear waves. The main objective of this paper is to apply a numerical upscaling method to determine the plane wave complex modulus of a viscoelastic solid long-wave equivalent to a fluid saturated poroelastic (Biot’s medium) with mesoscopic-scale heterogeneities in the form of brine-CO2 patches. This is achieved by applying time-harmonic compressibility tests at a selected set of frequencies to a representative sample of bulk material. These tests are modeled as boundary value problems stated in the space-frequency domain. This numerical upscaling approach was applied using data from the CO2 sequestration Sleipner-field case. A numerical flow simulator to represent the CO2 injection and storage was combined with a wave propagation model in order to obtain synthetic seismograms. The flow and petrophysical parameters were determined to obtain synthetic seismograms resembling actual field data. The simulations yield CO2 accumulations below the mudstone layers and synthetic seismograms which successfully match the typical pushdown effect, observed in actual field data.
format Objeto de conferencia
Objeto de conferencia
author Savioli, Gabriela B.
Santos, Juan Enrique
Macias, Lucas A.
Gauzellino, Patricia Mercedes
author_facet Savioli, Gabriela B.
Santos, Juan Enrique
Macias, Lucas A.
Gauzellino, Patricia Mercedes
author_sort Savioli, Gabriela B.
title A multiscale FEM to model CO<sub>2</sub> sequestration in saline aquifers
title_short A multiscale FEM to model CO<sub>2</sub> sequestration in saline aquifers
title_full A multiscale FEM to model CO<sub>2</sub> sequestration in saline aquifers
title_fullStr A multiscale FEM to model CO<sub>2</sub> sequestration in saline aquifers
title_full_unstemmed A multiscale FEM to model CO<sub>2</sub> sequestration in saline aquifers
title_sort multiscale fem to model co<sub>2</sub> sequestration in saline aquifers
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/103879
https://cimec.org.ar/ojs/index.php/mc/article/view/5366
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